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- Definition

Unfunded commitments for capital contributions

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- Definition

Nominal or face amount used to calculate payments on the derivative asset.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of decrease in the fair value of derivatives recognized in the income statement.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Estimated costs as of the balance sheet date of settling insured claims and costs incurred in the claims settlement process for claims that have not yet been submitted to the insurance company for reimbursement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The cash outflow associated with the purchase of noncontrolling interest during the period.

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The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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Commitments and Contingencies - Additional Information (Details) £ in Thousands			3 Months Ended			12 Months Ended
	Nov. 06, 2023 USD ($)	Jun. 29, 2023 USD ($)	Mar. 31, 2024 USD ($)	Sep. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 GBP (£)	Mar. 31, 2023 GBP (£)
Other Commitments [Line Items]
Unfunded Commitments for Capital Contributions			$ 2,584,000
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount			3,067,000					$ 3,165,000
Foreign Exchange Forward [Member]
Other Commitments [Line Items]
Derivative asset notional amount				$ 36,675,000	$ 36,903,000				£ 30,000	£ 30,000
Derivative, Loss on Derivative			347,000	$ 303,000
Derivative asset, current								1,585,000
Real Estate Capital Advisory [Member]
Other Commitments [Line Items]
Payments to Acquire Additional Interest in Subsidiaries			2,023,000		$ 715,000	$ 27,710,000	$ 6,000,000
Payable to Employees and Related Parties [Member] \| Real Estate Capital Advisory [Member]
Other Commitments [Line Items]
Noncontrolling Interest, Purchase of Interest, Contingent Consideration, Liability, Current								$ 2,023,000
Secured Line of Credit [Member] \| PNC Bank [Member]
Other Commitments [Line Items]
Maximum Borrowing Capacity		$ 30,000,000
Short-Term Borrowings			0
Secured Line of Credit [Member] \| PNC Bank [Member] \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Other Commitments [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.61%
Unsecured Line of Credit [Member] \| PNC Bank [Member]
Other Commitments [Line Items]
Maximum Borrowing Capacity		$ 55,000,000
Short-Term Borrowings			0
Unsecured Line of Credit [Member] \| PNC Bank [Member] \| EGL [Member]
Other Commitments [Line Items]
Maximum Borrowing Capacity	$ 75,000,000
Short-Term Borrowings			$ 0
Unsecured Line of Credit [Member] \| PNC Bank [Member] \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Other Commitments [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.91%
Unsecured Line of Credit [Member] \| PNC Bank [Member] \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate \| EGL [Member]
Other Commitments [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.91%